Question

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Answer 1

Answer:

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Answer 2

Answer:

let third angle is r

40°+30° + r = 180°(by angle sum property)

70°+ r =180°

r = 180°-70°

r =110°

let third angle is t

t +20°+30° =180°(by angle sum property)

t +50° = 180°

t = 180° - 50°

t =130°

110°+130°+ x=360°

240°+ x = 360°

x = 360°+240°

x = 120°

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